Auto-sync with upstream master
    
    Upstream commit: 5f245f3bfbe61b2182964dafb94907e38284b806.
    
    - Add crt1-2.0.o for glibc 2.0 compatibility tests
    - powerpc: Optimized strncmp for power10
    - build-many-glibcs.py: Add openrisc hard float glibc variant
    - or1k: Add hard float support
    - or1k: Add hard float libm-test-ulps
    - nscd: Use time_t for return type of addgetnetgrentX
    - Add a test to check for duplicate definitions in the static library
    - i686: Fix multiple definitions of __memmove_chk and __memset_chk
    - i586: Fix multiple definitions of __memcpy_chk and __mempcpy_chk
    - nscd: Typo inside comment in netgroup cache